745251405501 has 16 divisors (see below), whose sum is σ = 1015126103808. Its totient is φ = 486112065600.

The previous prime is 745251405491. The next prime is 745251405571. The reversal of 745251405501 is 105504152547.

It is not a de Polignac number, because 745251405501 - 2⁷ = 745251405373 is a prime.

It is a super-2 number, since 2×745251405501² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 745251405501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745251405571) 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, 366310 + ... + 1274631.

It is an arithmetic number, because the mean of its divisors is an integer number (63445381488).

Almost surely, 2^745251405501 is an apocalyptic number.

It is an amenable number.

745251405501 is a deficient number, since it is larger than the sum of its proper divisors (269874698307).

745251405501 is a wasteful number, since it uses less digits than its factorization.

745251405501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644212.

The product of its (nonzero) digits is 140000, while the sum is 39.

The spelling of 745251405501 in words is "seven hundred forty-five billion, two hundred fifty-one million, four hundred five thousand, five hundred one".