1248997839772 has 6 divisors (see below), whose sum is σ = 2185746219608. Its totient is φ = 624498919884.

The previous prime is 1248997839767. The next prime is 1248997839773. The reversal of 1248997839772 is 2779387998421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248997839773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156124729968 + ... + 156124729975.

Almost surely, 2^{1248997839772} is an apocalyptic number.

It is an amenable number.

1248997839772 is a deficient number, since it is larger than the sum of its proper divisors (936748379836).

1248997839772 is a wasteful number, since it uses less digits than its factorization.

1248997839772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312249459947 (or 312249459945 counting only the distinct ones).

The product of its digits is 768144384, while the sum is 76.

The spelling of 1248997839772 in words is "one trillion, two hundred forty-eight billion, nine hundred ninety-seven million, eight hundred thirty-nine thousand, seven hundred seventy-two".