61392854840 has 32 divisors (see below), whose sum is σ = 138154962960. Its totient is φ = 24553401600.

The previous prime is 61392854837. The next prime is 61392854843. The reversal of 61392854840 is 4845829316.

It is an interprime number because it is at equal distance from previous prime (61392854837) and next prime (61392854843).

It is a super-2 number, since 2×61392854840² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61392854843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156935 + ... + 383945.

Almost surely, 2^61392854840 is an apocalyptic number.

It is an amenable number.

61392854840 is an abundant number, since it is smaller than the sum of its proper divisors (76762108120).

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

61392854840 is a wasteful number, since it uses less digits than its factorization.

61392854840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233783 (or 233779 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 61392854840 in words is "sixty-one billion, three hundred ninety-two million, eight hundred fifty-four thousand, eight hundred forty".