1047795538972 has 72 divisors (see below), whose sum is σ = 2297577660000. Its totient is φ = 414424563840.

The previous prime is 1047795538877. The next prime is 1047795538973. The reversal of 1047795538972 is 2798355977401.

It is a junction number, because it is equal to n+sod(n) for n = 1047795538898 and 1047795538907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047795538973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12696322 + ... + 12778582.

Almost surely, 2^{1047795538972} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1047795538972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148788830000).

1047795538972 is an abundant number, since it is smaller than the sum of its proper divisors (1249782121028).

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

1047795538972 is a wasteful number, since it uses less digits than its factorization.

1047795538972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87291 (or 87282 counting only the distinct ones).

The product of its (nonzero) digits is 133358400, while the sum is 67.

The spelling of 1047795538972 in words is "one trillion, forty-seven billion, seven hundred ninety-five million, five hundred thirty-eight thousand, nine hundred seventy-two".