1520757234745 has 32 divisors (see below), whose sum is σ = 2142221372928. Its totient is φ = 1014505648128.

The previous prime is 1520757234727. The next prime is 1520757234757. The reversal of 1520757234745 is 5474327570251.

It is not a de Polignac number, because 1520757234745 - 2⁷ = 1520757234617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1520757234692 and 1520757234701.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12192537 + ... + 12316633.

It is an arithmetic number, because the mean of its divisors is an integer number (66944417904).

Almost surely, 2^{1520757234745} is an apocalyptic number.

It is an amenable number.

1520757234745 is a deficient number, since it is larger than the sum of its proper divisors (621464138183).

1520757234745 is a wasteful number, since it uses less digits than its factorization.

1520757234745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133609.

The product of its (nonzero) digits is 8232000, while the sum is 52.

The spelling of 1520757234745 in words is "one trillion, five hundred twenty billion, seven hundred fifty-seven million, two hundred thirty-four thousand, seven hundred forty-five".