1401573643547 has 16 divisors (see below), whose sum is σ = 1750060149504. Its totient is φ = 1090483020000.

The previous prime is 1401573643543. The next prime is 1401573643553. The reversal of 1401573643547 is 7453463751041.

It is not a de Polignac number, because 1401573643547 - 2² = 1401573643543 is a prime.

It is a super-2 number, since 2×1401573643547² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1401573643495 and 1401573643504.

It is not an unprimeable number, because it can be changed into a prime (1401573643543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13717829 + ... + 13819622.

It is an arithmetic number, because the mean of its divisors is an integer number (109378759344).

Almost surely, 2^{1401573643547} is an apocalyptic number.

1401573643547 is a deficient number, since it is larger than the sum of its proper divisors (348486505957).

1401573643547 is a wasteful number, since it uses less digits than its factorization.

1401573643547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27538130.

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 1401573643547 in words is "one trillion, four hundred one billion, five hundred seventy-three million, six hundred forty-three thousand, five hundred forty-seven".