4520742031540 has 72 divisors (see below), whose sum is σ = 11424338309160. Its totient is φ = 1496521490688.

The previous prime is 4520742031517. The next prime is 4520742031549. The reversal of 4520742031540 is 451302470254.

It can be written as a sum of positive squares in 4 ways, for example, as 217224973476 + 4303517058064 = 466074^2 + 2074492^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4520742031540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4520742031549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79506099 + ... + 79562938.

It is an arithmetic number, because the mean of its divisors is an integer number (158671365405).

Almost surely, 2^{4520742031540} is an apocalyptic number.

It is an amenable number.

4520742031540 is an abundant number, since it is smaller than the sum of its proper divisors (6903596277620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4520742031540 is a wasteful number, since it uses less digits than its factorization.

4520742031540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159069089 (or 159069080 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 37.

The spelling of 4520742031540 in words is "four trillion, five hundred twenty billion, seven hundred forty-two million, thirty-one thousand, five hundred forty".