1973995486512 has 80 divisors (see below), whose sum is σ = 5837402453760. Its totient is φ = 563087506176.

The previous prime is 1973995486471. The next prime is 1973995486517. The reversal of 1973995486512 is 2156845993791.

It is a super-2 number, since 2×1973995486512² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1973995486517) 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, 4537563 + ... + 4953530.

It is an arithmetic number, because the mean of its divisors is an integer number (72967530672).

Almost surely, 2^{1973995486512} is an apocalyptic number.

1973995486512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1973995486512 is an abundant number, since it is smaller than the sum of its proper divisors (3863406967248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1973995486512 is a wasteful number, since it uses less digits than its factorization.

1973995486512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9491730 (or 9491724 counting only the distinct ones).

The product of its digits is 146966400, while the sum is 69.

The spelling of 1973995486512 in words is "one trillion, nine hundred seventy-three billion, nine hundred ninety-five million, four hundred eighty-six thousand, five hundred twelve".