1655457503380 has 24 divisors (see below), whose sum is σ = 3680958449448. Its totient is φ = 623231059968.

The previous prime is 1655457503267. The next prime is 1655457503383. The reversal of 1655457503380 is 833057545561.

It can be written as a sum of positive squares in 4 ways, for example, as 729066653316 + 926390850064 = 853854^2 + 962492^2 .

It is a super-2 number, since 2×1655457503380² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655457503383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2434495989 + ... + 2434496668.

It is an arithmetic number, because the mean of its divisors is an integer number (153373268727).

Almost surely, 2^{1655457503380} is an apocalyptic number.

1655457503380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1655457503380 is an abundant number, since it is smaller than the sum of its proper divisors (2025500946068).

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

1655457503380 is a wasteful number, since it uses less digits than its factorization.

1655457503380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4868992683 (or 4868992681 counting only the distinct ones).

The product of its (nonzero) digits is 7560000, while the sum is 52.

The spelling of 1655457503380 in words is "one trillion, six hundred fifty-five billion, four hundred fifty-seven million, five hundred three thousand, three hundred eighty".