1542001696973 has 4 divisors (see below), whose sum is σ = 1571096068668. Its totient is φ = 1512907325280.

The previous prime is 1542001696751. The next prime is 1542001696979. The reversal of 1542001696973 is 3796961002451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 416072731369 + 1125928965604 = 645037^2 + 1061098^2 .

It is a cyclic number.

It is not a de Polignac number, because 1542001696973 - 2¹² = 1542001692877 is a prime.

It is a super-2 number, since 2×1542001696973² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 29094371641 = 1542001696973 / (1 + 5 + 4 + 2 + 0 + 0 + 1 + 6 + 9 + 6 + 9 + 7 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542001696979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14547185768 + ... + 14547185873.

It is an arithmetic number, because the mean of its divisors is an integer number (392774017167).

Almost surely, 2^{1542001696973} is an apocalyptic number.

It is an amenable number.

1542001696973 is a deficient number, since it is larger than the sum of its proper divisors (29094371695).

1542001696973 is an equidigital number, since it uses as much as digits as its factorization.

1542001696973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29094371694.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 1542001696973 in words is "one trillion, five hundred forty-two billion, one million, six hundred ninety-six thousand, nine hundred seventy-three".