145406873631 has 16 divisors (see below), whose sum is σ = 204099324800. Its totient is φ = 91827144288.

The previous prime is 145406873627. The next prime is 145406873663. The reversal of 145406873631 is 136378604541.

It is a happy number.

It is not a de Polignac number, because 145406873631 - 2² = 145406873627 is a prime.

It is a super-2 number, since 2×145406873631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145406873621) 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, 508140 + ... + 740958.

It is an arithmetic number, because the mean of its divisors is an integer number (12756207800).

Almost surely, 2^145406873631 is an apocalyptic number.

145406873631 is a deficient number, since it is larger than the sum of its proper divisors (58692451169).

145406873631 is a wasteful number, since it uses less digits than its factorization.

145406873631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243798.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 145406873631 in words is "one hundred forty-five billion, four hundred six million, eight hundred seventy-three thousand, six hundred thirty-one".