1245772755628 has 6 divisors (see below), whose sum is σ = 2180102322356. Its totient is φ = 622886377812.

The previous prime is 1245772755587. The next prime is 1245772755629. The reversal of 1245772755628 is 8265572775421.

It is not an unprimeable number, because it can be changed into a prime (1245772755629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155721594450 + ... + 155721594457.

Almost surely, 2^{1245772755628} is an apocalyptic number.

It is an amenable number.

1245772755628 is a deficient number, since it is larger than the sum of its proper divisors (934329566728).

1245772755628 is a wasteful number, since it uses less digits than its factorization.

1245772755628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311443188911 (or 311443188909 counting only the distinct ones).

The product of its digits is 65856000, while the sum is 61.

The spelling of 1245772755628 in words is "one trillion, two hundred forty-five billion, seven hundred seventy-two million, seven hundred fifty-five thousand, six hundred twenty-eight".