61435258155384 has 16 divisors (see below), whose sum is σ = 153588145388520. Its totient is φ = 20478419385120.

The previous prime is 61435258155373. The next prime is 61435258155407. The reversal of 61435258155384 is 48355185253416.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1279901211547 + ... + 1279901211594.

Almost surely, 2^{61435258155384} is an apocalyptic number.

It is an amenable number.

61435258155384 is an abundant number, since it is smaller than the sum of its proper divisors (92152887233136).

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

61435258155384 is a wasteful number, since it uses less digits than its factorization.

61435258155384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559802423150 (or 2559802423146 counting only the distinct ones).

The product of its digits is 69120000, while the sum is 60.

The spelling of 61435258155384 in words is "sixty-one trillion, four hundred thirty-five billion, two hundred fifty-eight million, one hundred fifty-five thousand, three hundred eighty-four".