61413083787 has 18 divisors (see below), whose sum is σ = 90011770324. Its totient is φ = 37217189240.

The previous prime is 61413083741. The next prime is 61413083807. The reversal of 61413083787 is 78738031416.

It is not a de Polignac number, because 61413083787 - 2⁶ = 61413083723 is a prime.

It is a super-2 number, since 2×61413083787² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61413083717) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4715038 + ... + 4728044.

Almost surely, 2^61413083787 is an apocalyptic number.

61413083787 is a deficient number, since it is larger than the sum of its proper divisors (28598686537).

61413083787 is an frugal number, since it uses more digits than its factorization.

61413083787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26039 (or 13021 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

Multiplying 61413083787 by its sum of digits (48), we get a square (2947828021776 = 1716924²).

The spelling of 61413083787 in words is "sixty-one billion, four hundred thirteen million, eighty-three thousand, seven hundred eighty-seven".